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Scientists have demonstrated a way to assess coating resistance to repeated mechanical stresses.
many engineering structures fail due to fatigue damage caused by circulating mechanical stress. However, in the case of organic coatings, this degradation factor is still
. In this paper, the author proposes a method that combines the overall electrochemical impedance spectrum with local atomic force microscope measurements to assess the effect of coating on repeated mechanical stress.
a typical epoxy coating
a typical epoxy coating designated for hull protection has been tested in reception and in pre-exposure to high temperatures. The application of an atomic force microscope-based method helps to reveal and spatially locate the spots at which organic coating degradation begins. The mechanism and process of defect formation and propagation have been shown on the microscopic scale.
the study was published in September 2020 in issue 146 of Organic Coatings Progress.